./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1535013456 <...> Warning: Permanently added '10.128.1.201' (ED25519) to the list of known hosts. execve("./syz-executor1535013456", ["./syz-executor1535013456"], 0x7ffc822f2960 /* 10 vars */) = 0 brk(NULL) = 0x55555ca77000 brk(0x55555ca77d00) = 0x55555ca77d00 arch_prctl(ARCH_SET_FS, 0x55555ca77380) = 0 set_tid_address(0x55555ca77650) = 5838 set_robust_list(0x55555ca77660, 24) = 0 rseq(0x55555ca77ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1535013456", 4096) = 28 getrandom("\xf8\xba\x06\xb9\x09\x66\x0f\xaf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555ca77d00 brk(0x55555ca98d00) = 0x55555ca98d00 brk(0x55555ca99000) = 0x55555ca99000 mprotect(0x7f0310f77000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5839 attached [pid 5839] set_robust_list(0x55555ca77660, 24 [pid 5838] <... clone resumed>, child_tidptr=0x55555ca77650) = 5839 [pid 5839] <... set_robust_list resumed>) = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5839] setpgid(0, 0) = 0 [pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1000", 4) = 4 [pid 5839] close(3) = 0 [pid 5839] write(1, "executing program\n", 18executing program ) = 18 [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0308a00000 [pid 5839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216 [pid 5839] munmap(0x7f0308a00000, 138412032) = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5839] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5839] close(3) = 0 [pid 5839] close(4) = 0 [pid 5839] mkdir("./file0", 0777) = 0 [ 88.297760][ T5839] loop0: detected capacity change from 0 to 32768 [ 88.406304][ T5839] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names [ 88.406321][ T5839] allowing incompatible features above 0.0: (unknown version) [ 88.406327][ T5839] features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes [ 88.443716][ T5839] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 [ 88.452796][ T5839] bcachefs (loop0): invalid bkey in superblock btree=backpointers level=1: u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 4a8b0fa43a9980a6 written 24 min_key 432345564227567616:0:0 durability: 0 (invalid extent entry 0000000000000000) [ 88.452828][ T5839] invalid extent entry type (got 7, max 7), deleting [ 88.483008][ T5839] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 88.491376][ T5839] bcachefs (loop0): Version upgrade required: [ 88.491376][ T5839] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 88.491376][ T5839] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive [ 88.491376][ T5839] running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,check_rebalance_work,set_fs_needs_rebalance [ 88.576868][ T5839] bcachefs (loop0): invalid bkey in btree_node btree=inodes level=0: u64s 17 type inode_v3 0:4097:U32_MAX len 0 ver 0: (unpack error) [ 88.576892][ T5839] invalid variable length fields, deleting [ 88.597155][ T5839] bcachefs (loop0): btree node read error at btree inodes level 0/0 [ 88.597182][ T5839] u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a written 65304 min_key R POS_MIN durability: 1 ptr: 0:38:0 gen 0 [ 88.597190][ T5839] loop0 node offset 24/65304: btree node data missing: expected 65304 sectors, found 24 [ 88.597196][ T5839] repair success (rewriting node) [ 88.637629][ T5839] bcachefs (loop0): invalid bkey in btree_node btree=alloc level=0: u64s 12 type alloc_v4 0:28:0 len 0 ver 0: [ 88.637644][ T5839] gen 0 oldest_gen 0 data_type btree [ 88.637650][ T5839] journal_seq_nonempty 6 [ 88.637655][ T5839] journal_seq_empty 0 [ 88.637661][ T5839] need_discard 1 [ 88.637666][ T5839] need_inc_gen 1 [ 88.637671][ T5839] dirty_sectors 0 [ 88.637677][ T5839] stripe_sectors 1769482 [ 88.637682][ T5839] cached_sectors 0 [ 88.637687][ T5839] stripe 0 [ 88.637692][ T5839] stripe_redundancy 0 [ 88.637698][ T5839] io_time[READ] 1 [ 88.637703][ T5839] io_time[WRITE] 768 [ 88.637708][ T5839] fragmentation 0 [ 88.637713][ T5839] bp_start 7 [ 88.637718][ T5839] [ 88.637723][ T5839] invalid data type (got 3 should be 9), deleting [ 88.729492][ T5839] bcachefs (loop0): accounting_read... done [ 88.737689][ T5839] bcachefs (loop0): alloc_read... done [ 88.744278][ T5839] bcachefs (loop0): snapshots_read... done [ 88.752656][ T5839] bcachefs (loop0): check_allocations... [ 88.755834][ T5839] bcachefs (loop0): bucket 0:26 data type btree ptr gen 0 missing in alloc btree [ 88.755856][ T5839] while marking u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0, fixing [ 88.788154][ T5839] ------------[ cut here ]------------ [ 88.793778][ T5839] kernel BUG at fs/bcachefs/bset.h:287! [ 88.799796][ T5839] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 88.806085][ T5839] CPU: 1 UID: 0 PID: 5839 Comm: syz-executor153 Not tainted 6.16.0-rc5-syzkaller-00038-g733923397fd9 #0 PREEMPT(full) [ 88.818692][ T5839] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 88.828770][ T5839] RIP: 0010:bch2_btree_node_iter_init+0x3961/0x3a50 [ 88.835387][ T5839] Code: fd 90 0f 0b e8 a0 d7 a5 fd 90 0f 0b e8 98 d7 a5 fd 90 0f 0b e8 90 d7 a5 fd 90 0f 0b e8 88 d7 a5 fd 90 0f 0b e8 80 d7 a5 fd 90 <0f> 0b e8 78 d7 a5 fd 90 0f 0b e8 70 d7 a5 fd 90 0f 0b e8 68 d7 a5 [ 88.855013][ T5839] RSP: 0018:ffffc90003f8e300 EFLAGS: 00010293 [ 88.861092][ T5839] RAX: ffffffff841a4dd0 RBX: 000000000000004e RCX: ffff8880273dda00 [ 88.869074][ T5839] RDX: 0000000000000000 RSI: 000000000000004e RDI: 0000000000000001 [ 88.877190][ T5839] RBP: ffffc90003f8e530 R08: ffff8880273dda00 R09: 0000000000000002 [ 88.885179][ T5839] R10: 000000000000ffff R11: 0000000000000000 R12: dffffc0000000000 [ 88.893179][ T5839] R13: ffff888064897108 R14: ffff888073a80288 R15: 0000000000000001 [ 88.901252][ T5839] FS: 000055555ca77380(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000 [ 88.910188][ T5839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.916807][ T5839] CR2: 000055c391632a50 CR3: 0000000033876000 CR4: 00000000003526f0 [ 88.924786][ T5839] Call Trace: [ 88.928068][ T5839] [ 88.931010][ T5839] ? __pfx_bch2_btree_node_iter_init+0x10/0x10 [ 88.937170][ T5839] ? bch2_btree_path_traverse_one+0x91e/0x21d0 [ 88.943448][ T5839] bch2_btree_path_level_init+0x50b/0xa20 [ 88.949183][ T5839] bch2_btree_path_traverse_one+0xfec/0x21d0 [ 88.955173][ T5839] ? bch2_btree_path_traverse_one+0x91e/0x21d0 [ 88.961331][ T5839] ? bch2_check_allocations+0x120d/0x57b0 [ 88.967095][ T5839] ? bch2_btree_iter_verify+0x1d/0x360 [ 88.972554][ T5839] bch2_btree_iter_peek_max+0x9e8/0x58f0 [ 88.978391][ T5839] ? bch2_check_allocations+0x120d/0x57b0 [ 88.984127][ T5839] ? __pfx_bch2_btree_iter_peek_max+0x10/0x10 [ 88.990208][ T5839] ? bch2_trans_begin+0xbe0/0x2310 [ 88.995327][ T5839] ? bch2_check_allocations+0x11cd/0x57b0 [ 89.001050][ T5839] ? bch2_trans_begin+0xbf5/0x2310 [ 89.006178][ T5839] ? bch2_trans_begin+0x1a71/0x2310 [ 89.011386][ T5839] ? bch2_trans_node_iter_init+0x348/0x5e0 [ 89.017365][ T5839] ? bch2_trans_node_iter_init+0x406/0x5e0 [ 89.023264][ T5839] ? __pfx_bch2_trans_begin+0x10/0x10 [ 89.028725][ T5839] ? __pfx_bch2_trans_node_iter_init+0x10/0x10 [ 89.034869][ T5839] ? bch2_check_allocations+0x1aa1/0x57b0 [ 89.040587][ T5839] bch2_check_allocations+0x120d/0x57b0 [ 89.046230][ T5839] ? prb_read_valid+0x3c/0x60 [ 89.051016][ T5839] ? desc_read+0x1b8/0x3f0 [ 89.055426][ T5839] ? bch2_check_allocations+0xf91/0x57b0 [ 89.061069][ T5839] ? prb_first_seq+0xfd/0x1a0 [ 89.065739][ T5839] ? __pfx_prb_first_seq+0x10/0x10 [ 89.071039][ T5839] ? desc_read+0x1b8/0x3f0 [ 89.075451][ T5839] ? __pfx_bch2_check_allocations+0x10/0x10 [ 89.081341][ T5839] ? up+0xde/0x150 [ 89.085078][ T5839] ? __pfx__prb_read_valid+0x10/0x10 [ 89.090360][ T5839] ? __console_unlock+0x14c/0x1a0 [ 89.095383][ T5839] ? __pfx___console_unlock+0x10/0x10 [ 89.100778][ T5839] ? prb_read_valid+0x3c/0x60 [ 89.105452][ T5839] ? console_unlock+0x21b/0x270 [ 89.110304][ T5839] ? bch2_check_allocations+0x11c1/0x57b0 [ 89.116020][ T5839] ? irq_work_queue+0xc3/0x140 [ 89.120797][ T5839] ? bch2_check_allocations+0x1aa1/0x57b0 [ 89.126512][ T5839] ? __pfx_vprintk_emit+0x10/0x10 [ 89.131532][ T5839] ? do_raw_spin_lock+0x121/0x290 [ 89.136556][ T5839] ? __pfx___bch2_print+0x10/0x10 [ 89.141597][ T5839] ? _raw_spin_unlock_irq+0x23/0x50 [ 89.146893][ T5839] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.152104][ T5839] __bch2_run_recovery_passes+0x395/0x1010 [ 89.157932][ T5839] bch2_run_recovery_passes+0x184/0x210 [ 89.163493][ T5839] bch2_fs_recovery+0x2690/0x3a50 [ 89.168609][ T5839] ? check_noncircular+0xe0/0x160 [ 89.173663][ T5839] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 89.179049][ T5839] ? __lock_acquire+0xab9/0xd20 [ 89.183897][ T5839] ? __lock_acquire+0xab9/0xd20 [ 89.188789][ T5839] ? __lock_acquire+0xab9/0xd20 [ 89.193644][ T5839] ? bch2_fs_start+0xa0f/0xda0 [ 89.198416][ T5839] ? up_write+0x1c4/0x420 [ 89.202828][ T5839] ? bch2_fs_start+0x5e7/0xda0 [ 89.207592][ T5839] bch2_fs_start+0xaaf/0xda0 [ 89.212197][ T5839] ? bch2_fs_start+0x5e7/0xda0 [ 89.217049][ T5839] ? __pfx_bch2_fs_start+0x10/0x10 [ 89.222179][ T5839] ? sget+0x267/0x620 [ 89.226169][ T5839] bch2_fs_get_tree+0xb39/0x1520 [ 89.231215][ T5839] ? __fs_parse+0x5d3/0x730 [ 89.235745][ T5839] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 89.241498][ T5839] ? vfs_parse_monolithic_sep+0x2df/0x310 [ 89.247403][ T5839] ? __pfx_vfs_parse_comma_sep+0x10/0x10 [ 89.253124][ T5839] ? cap_capable+0x11f/0x460 [ 89.257714][ T5839] ? bch2_init_fs_context+0x88/0x110 [ 89.263081][ T5839] ? safesetid_security_capable+0xa9/0x1a0 [ 89.268886][ T5839] vfs_get_tree+0x92/0x2b0 [ 89.273306][ T5839] do_new_mount+0x24a/0xa40 [ 89.277912][ T5839] __se_sys_mount+0x317/0x410 [ 89.282587][ T5839] ? __pfx___se_sys_mount+0x10/0x10 [ 89.287870][ T5839] ? __x64_sys_mount+0x20/0xc0 [ 89.292714][ T5839] do_syscall_64+0xfa/0x3b0 [ 89.297215][ T5839] ? lockdep_hardirqs_on+0x9c/0x150 [ 89.302497][ T5839] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.308561][ T5839] ? clear_bhb_loop+0x60/0xb0 [ 89.313231][ T5839] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.319118][ T5839] RIP: 0033:0x7f0310f000aa [ 89.323618][ T5839] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 89.343223][ T5839] RSP: 002b:00007ffce0310ec8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 89.351634][ T5839] RAX: ffffffffffffffda RBX: 00007ffce0310ee0 RCX: 00007f0310f000aa [ 89.359601][ T5839] RDX: 00002000000058c0 RSI: 0000200000005900 RDI: 00007ffce0310ee0 [ 89.367570][ T5839] RBP: 0000200000005900 R08: 00007ffce0310f20 R09: 000000000000591d [ 89.375532][ T5839] R10: 0000000000010000 R11: 0000000000000282 R12: 00002000000058c0 [ 89.383583][ T5839] R13: 00007ffce0310f20 R14: 0000000000000003 R15: 0000000000010000 [ 89.391554][ T5839] [ 89.394582][ T5839] Modules linked in: [ 89.398706][ T5839] ---[ end trace 0000000000000000 ]--- [ 89.404314][ T5839] RIP: 0010:bch2_btree_node_iter_init+0x3961/0x3a50 [ 89.411063][ T5839] Code: fd 90 0f 0b e8 a0 d7 a5 fd 90 0f 0b e8 98 d7 a5 fd 90 0f 0b e8 90 d7 a5 fd 90 0f 0b e8 88 d7 a5 fd 90 0f 0b e8 80 d7 a5 fd 90 <0f> 0b e8 78 d7 a5 fd 90 0f 0b e8 70 d7 a5 fd 90 0f 0b e8 68 d7 a5 [ 89.431076][ T5839] RSP: 0018:ffffc90003f8e300 EFLAGS: 00010293 [ 89.437190][ T5839] RAX: ffffffff841a4dd0 RBX: 000000000000004e RCX: ffff8880273dda00 [ 89.445195][ T5839] RDX: 0000000000000000 RSI: 000000000000004e RDI: 0000000000000001 [ 89.453225][ T5839] RBP: ffffc90003f8e530 R08: ffff8880273dda00 R09: 0000000000000002 [ 89.461232][ T5839] R10: 000000000000ffff R11: 0000000000000000 R12: dffffc0000000000 [ 89.469240][ T5839] R13: ffff888064897108 R14: ffff888073a80288 R15: 0000000000000001 [ 89.477283][ T5839] FS: 000055555ca77380(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000 [ 89.486249][ T5839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.492951][ T5839] CR2: 000055c391632a50 CR3: 0000000033876000 CR4: 00000000003526f0 [ 89.500984][ T5839] Kernel panic - not syncing: Fatal exception [ 89.507379][ T5839] Kernel Offset: disabled [ 89.511706][ T5839] Rebooting in 86400 seconds..